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Polyamines are widely distributed in living organisms and are known to be essential elements for normal growth and development. Although they may affect phytoplankton growth their existence and concentration in seawater is unclear. In this paper the polyamine concentrations in coastal seawater are measured by high performance liquid chromatography (HPLC) using cation exchange resin and OPA reagent. This method seems sufficient for their detection in seawater. Putrescine and spermidine were found to be the major polyamines in the coastal seawater, though their respective concentrations varied...

Polyamines are widely distributed in living organisms and are known to be essential elements for normal growth and development. Although they may affect phytoplankton growth their existence and concentration in seawater is unclear. In this paper the polyamine concentrations in coastal seawater are measured by high performance liquid chromatography (HPLC) using cation exchange resin and OPA reagent. This method seems sufficient for their detection in seawater. Putrescine and spermidine were found to be the major polyamines in the coastal seawater, though their respective concentrations varied widely. In addition to them cadaverine, norspermidine, norspermine, and spermine were also detected.